WO2022127803A1 - Power grid clock synchronization method and device - Google Patents
Power grid clock synchronization method and device Download PDFInfo
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- WO2022127803A1 WO2022127803A1 PCT/CN2021/138196 CN2021138196W WO2022127803A1 WO 2022127803 A1 WO2022127803 A1 WO 2022127803A1 CN 2021138196 W CN2021138196 W CN 2021138196W WO 2022127803 A1 WO2022127803 A1 WO 2022127803A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
Definitions
- the present application relates to the technical field of time synchronization, and in particular, to a method and device for power grid clock synchronization.
- Accurate time synchronization is one of the key technologies of intelligent distribution network. Through accurate time synchronization, related application functions such as fault identification, impedance estimation, and power quality diagnosis can be realized.
- time synchronization methods there are currently methods of time synchronization through a network and a global navigation system.
- the current method has some shortcomings. Specifically, through the network time synchronization method, the time synchronization accuracy can reach the level of 10ms, but it is difficult to be further accurate, and it is difficult to meet the requirements of higher precision.
- the global navigation system time synchronization method although The time can be accurate to within 100us, but it is easily affected by factors such as building occlusion, and it is difficult for some power distribution rooms or basements to receive the time synchronization signal, and the scope of use is limited.
- the present application provides a power grid clock synchronization method and device to solve the problems in the related art that the time synchronization accuracy of the power supply and distribution system is not high, and the synchronization signal is susceptible to interference.
- a method for synchronizing a power grid clock includes: in the low-voltage line of the power supply and distribution system, judging whether there is a branch line in the target line segment; if there is no branch line in the target line segment, based on the relationship between the current phases of each node, the target line
- Each node on the line segment is time synchronized; in the case of a branch line in the target line segment, at least one bus corresponding to the branch line is determined, and based on the relationship between the voltage phases of each branch node on each bus, Time synchronization is performed on each branch node; time synchronization is performed on each child node based on the relationship between the current phases of each child node on the branch line segment corresponding to each branch node.
- the method further includes: in the process of time synchronization, the time management terminal obtains the absolute time through one of the following modules: a communication timing module, a Beidou timing module or a GPS timing module.
- performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node includes: acquiring a current waveform diagram of each node on the target line segment; The current phase difference between the target node and the nodes other than the first target node; the time offset between the first target node and the nodes other than the first target node is determined according to the current phase difference; based on the clock of the first target node and the first target node Time offset between a target node and nodes other than the first target node, and time synchronization is performed on nodes other than the first target node.
- the method before performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node, the method further includes: determining a plurality of nodes on the target line segment; The node with the shortest distance from the current input terminal of the segment is determined as the first target node.
- performing time synchronization on each branch node of the target line segment based on the relationship between the voltage phases of each branch node includes: acquiring a voltage waveform diagram of the second target node in the target line segment, and each branch node of the second target node.
- At least one bus corresponding to the branch line is determined, and based on the relationship between the voltage phases of each branch node on each bus, time synchronization is performed on each branch node. Including: acquiring the voltage waveform diagram of the second target node in the target line segment, and the voltage waveform diagram of each branch node on the bus where the second target node is located; based on the voltage waveform diagram of the second target node and the location of the second target node The voltage waveform diagram of each branch node on the bus, determine the voltage phase difference between the second target node and each branch node on the bus where the second target node is located; determine the second target node and the second target according to the voltage phase difference.
- Each branch node on the bus where the two target nodes are located performs time synchronization.
- performing time synchronization on each child node includes: acquiring the current waveform diagram of each child node on the branch line segment; Based on the current waveforms of each sub-node, determine the current phase difference between the first target sub-node and sub-nodes other than the first target sub-node, wherein the first target sub-node is the branch node of the branch line segment; according to the current phase The difference determines the time offset between the first target child node and the child nodes other than the first target child node; based on the clock of the first target child node and between the first target child node and the child nodes other than the first target child node time offset, and time synchronization is performed on child nodes other than the first target child node.
- a power grid clock synchronization apparatus includes: a judging unit for judging whether a branch line exists in a target line segment in a low-voltage line of an electric power supply and distribution system; a first time synchronization unit for judging whether there is a branch line in the target line segment , perform time synchronization on each node on the target line segment based on the relationship between the current phases of each node; the second time synchronization unit is used for determining at least one branch line corresponding to the branch line in the case of a branch line in the target line segment bus, and based on the relationship between the voltage phases of each branch node on each bus, time synchronization is performed on each branch node; a third time synchronization unit is used to separately base on the branch line segment corresponding to each branch node.
- the relationship between the current phases of each sub-node is time-synchronized for each sub-node.
- the device further includes: a transmission unit, configured to use the time management terminal to grant the synchronized time to each node through one of the following communication modules during the time synchronization process: a Beidou timing module or a GPS timing module.
- a transmission unit configured to use the time management terminal to grant the synchronized time to each node through one of the following communication modules during the time synchronization process: a Beidou timing module or a GPS timing module.
- a storage medium includes a stored program, wherein the program executes any one of the above-mentioned power grid clock synchronization methods.
- a processor is provided, and the processor is used for running a program, wherein any one of the above grid clock synchronization methods is executed when the program is running.
- the following steps are adopted: in the low-voltage line of the power supply and distribution system, it is judged whether there is a branch line in the target line segment; if there is no branch line in the target line segment, based on the current phase difference of each node time synchronization of each node on the target line segment; in the case of a branch line in the target line segment, determine at least one bus bar corresponding to the branch line, and based on the voltage phase difference of each branch node on each bus line Time synchronization is performed on each branch node; based on the relationship between the current phases of each child node on the branch line segment corresponding to each branch node, time synchronization is performed on each child node, which solves the problem of electric power in the related art.
- the time synchronization accuracy of the power supply and distribution system is not high, and the synchronization signal is susceptible to interference.
- the clock synchronization of the low-voltage lines of the power supply and distribution system is performed, thereby improving the time synchronization accuracy and anti-interference of the power supply and distribution system. effect of ability.
- FIG. 1 is a flowchart of a method for synchronizing a power grid clock provided according to an embodiment of the present application
- FIG. 2 is a schematic diagram of time synchronization of low-voltage lines of a power supply and distribution system provided according to an embodiment of the present application.
- FIG. 3 is a schematic diagram of a power grid clock synchronization apparatus provided according to an embodiment of the present application.
- a method for synchronizing a power grid clock is provided.
- FIG. 1 is a flowchart of a method for synchronizing clocks of a power grid according to an embodiment of the present application. As shown in Figure 1, the method includes the following steps:
- Step S101 in the low-voltage line of the power supply and distribution system, determine whether there is a branch line in the target line segment.
- Step S102 in the case that there is no branch line in the target line segment, perform time synchronization on each node on the target line segment based on the relationship between the current phases of each node.
- the distributed capacitance of the low-voltage line is very small and can be ignored. Therefore, when the distributed capacitance of the unbranched low-voltage line is negligible, it can be considered that the input current and the output current are in the same phase, so that the current phase value is used.
- the time synchronization of the nodes on the unbranched low-voltage wires can be realized by the simultaneous characteristic of the method, which can be recorded as the unbranched current timing method.
- the method before performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node, the method further includes: in the target line segment Multiple nodes are determined on the above; the node with the shortest distance from the current input end of the target line segment among the multiple nodes is determined as the first target node.
- the clock of the node with the shortest distance from the current input terminal can be used as a reference to perform time synchronization on other nodes. Therefore, the node with the shortest distance from the current input terminal is determined as the first node.
- a target node that is, a reference node.
- performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node includes: acquiring the current of each node on the target line segment. Waveform diagram; based on the current waveform diagram of each node, determine the current phase difference between the first target node and nodes other than the first target node; determine the current phase difference between the first target node and nodes other than the first target node according to the current phase difference time offset; based on the clock of the first target node and the time offset between the first target node and nodes other than the first target node, perform time synchronization on nodes other than the first target node.
- the current waveform diagram of each node on the target line segment is acquired through the time management terminal, so that the zero point position in the current waveform diagram of the first target node can be determined, the coordinates of the zero point position are acquired, and then the node to be time synchronized can be acquired
- the coordinates of the zero point position in the current waveform diagram of the current waveform of The difference or sum of the clock of a target node and the time offset is the exact moment of the node to be time synchronized.
- Step S103 in the case that there is a branch line in the target line segment, determine at least one bus bar corresponding to the branch line, and perform time synchronization on each branch node based on the relationship between the voltage phases of each branch node on each bus line respectively .
- the target line segment can include multiple bus bars, each bus includes multiple branch nodes, and each branch node corresponds to a branch circuit. It can be ignored, so at each branch node of the same node, when the reactance is negligible, the time synchronization of different branches can be realized by using the simultaneous characteristics of the voltage phase, and this method can be recorded as the non-impedance voltage timing method.
- the time synchronization of each branch node includes: acquiring the voltage waveform diagram of the second target node in the target line segment, and the voltage waveform diagram of each branch node on the bus where the second target node is located; The voltage waveform diagram of the second target node and the voltage waveform diagram of each branch node on the bus where the second target node is located, determine the voltage phase difference between the second target node and each branch node on the bus where the second target node is located Determine the time offset between each branch node on the bus where the second target node and the second target node are located according to the voltage phase difference; Based on the clock of the second target node, and the bus where the second target node and the second target node are located The time offset between each branch node on the bus is time offset, and time
- the position of the zero point in the voltage waveform diagram of the second target node can be determined, the coordinates of the zero point position can be obtained, and then the coordinates of the zero point position in the voltage waveform diagram of the branch nodes on the same bus of the second target node can be obtained, based on The second target node and the zero point position coordinates in the voltage waveform diagram of the branch node of the second target node on the same bus, obtain the phase difference, convert the phase difference into a time difference, that is, time offset, the clock of the second target node and The difference or sum of the time offsets is the exact moment of the branch node on the same bus line of the second target node.
- Step S104 based on the relationship between the current phases of the respective child nodes on the branch line segment corresponding to each branch node, perform time synchronization on each child node.
- the time synchronization of each child node includes: Obtain the current waveform diagram of each sub-node on the branch line segment; based on the current waveform diagram of each sub-node, determine the current phase difference between the first target sub-node and sub-nodes other than the first target sub-node, wherein the first target sub-node
- the target child node is a branch node of the branch line segment; the time offset between the first target child node and the child nodes other than the first target child node is determined according to the current phase difference; based on the clock of the first target child node and the first target
- the time offset between the child node and the child nodes other than the first target child node is used to perform time synchronization on the child nodes other than the first target child node.
- each sub-node on the branch line segment is the same as that of the time synchronization of the target line segment without branch.
- the current waveform diagram of each branch node of the branch line is obtained through the time management terminal, and a The branch node of the branch line is determined as the target child node, so that the relationship between the current phases of each child node realizes the time synchronization of each child node.
- the method further includes: in the process of time synchronization, the time management terminal obtains the absolute time through one of the following modules: a communication timing module, a Beidou timing module or a GPS Timing module.
- the time management terminal in the power supply and distribution system not only obtains the voltage phase diagram or current phase diagram of each node, but also obtains accurate time synchronization, which lays the foundation for the accurate time synchronization of each branch time synchronization unit and the terminal time synchronization unit. Data base.
- FIG. 2 it is a schematic diagram of time synchronization of low-voltage lines of a power supply and distribution system provided according to an embodiment of the present application.
- the time management terminal calculates the precise time through the non-branch current timing method, and grants the precise time to the branch time synchronization unit corresponding to each bus, and the branch time synchronization unit calculates the precise time through the non-impedance voltage timing method, and grants the precise time to the corresponding Each branch of the busbar is then time-synchronized by the non-branch current timing method timing terminal.
- the timing method of the present application needs to realize basic timing through communication or other modes, and the basic timing accuracy requirement is ⁇ 20ms.
- the power grid clock synchronization method determines whether there is a branch line in the target line segment in the low-voltage line of the power supply and distribution system; if there is no branch line in the target line segment, based on the The relationship between the current phases performs time synchronization on each node on the target line segment; in the case of a branch line in the target line segment, at least one busbar corresponding to the branch line is determined, and based on each branch node on each busbar Based on the relationship between the voltage phases of each branch node, time synchronization is performed on each branch node; based on the relationship between the current phases of each child node on the branch line segment corresponding to each branch node, time synchronization is performed on each child node to solve the problem.
- the time synchronization accuracy of the power supply and distribution system is not high, and the synchronization signal is susceptible to interference.
- the clock synchronization of the low-voltage lines of the power supply and distribution system is performed, thereby improving the time synchronization accuracy and anti-interference of the power supply and distribution system. effect of ability.
- the embodiment of the present application further provides a power grid clock synchronization apparatus.
- the power grid clock synchronization apparatus of the present application embodiment may be used to execute the power grid clock synchronization method provided by the embodiment of the present application.
- the following describes the power grid clock synchronization device provided by the embodiment of the present application.
- FIG. 3 is a schematic diagram of a power grid clock synchronization apparatus according to an embodiment of the present application. As shown in FIG. 3 , the apparatus includes: a judgment unit 31 , a first time synchronization unit 32 and a second time synchronization unit 33 .
- the judging unit 31 is used for judging whether there is a branch line in the target line segment in the low-voltage line of the power supply and distribution system;
- the first time synchronization unit 32 is configured to perform time synchronization on each node on the target line segment based on the relationship between the current phases of each node when there is no branch line in the target line segment;
- the second time synchronization unit 33 is configured to determine at least one bus bar corresponding to the branch line when there is a branch line in the target line segment, and based on the relationship between the voltage phases of the branch nodes on each bus Each branch node performs time synchronization;
- the third time synchronization unit 34 is configured to perform time synchronization on each child node based on the relationship between the current phases of each child node on the branch line segment corresponding to each branch node, respectively.
- the device further includes: a transmission unit, configured to use a time management terminal to obtain the absolute time through one of the following modules during the time synchronization process: a communication timing module , Beidou timing module or GPS timing module.
- a transmission unit configured to use a time management terminal to obtain the absolute time through one of the following modules during the time synchronization process: a communication timing module , Beidou timing module or GPS timing module.
- the first time synchronization unit 31 includes: a first acquisition module, configured to acquire the current waveform diagram of each node on the target line segment; a first determination module, is used to determine the current phase difference between the first target node and nodes other than the first target node based on the current waveform diagram of each node; the second determination module is used to determine the first target node and the first target according to the current phase difference.
- the time offset between nodes other than the node; the first time synchronization judgment module is used for determining the first target node based on the clock of the first target node and the time offset between the first target node and nodes other than the first target node. Nodes other than the target node perform time synchronization.
- the device further includes: a third determining module, configured to perform time chronometry for each node on the target line segment based on the relationship between the current phases of each node. Before synchronization, a plurality of nodes are determined on the target line segment; the fourth determination module is configured to determine the node with the shortest distance from the current input end of the target line segment among the plurality of nodes as the first target node.
- the second time synchronization unit 33 includes: a second acquisition module, configured to acquire a voltage waveform diagram of the second target node in the target line segment, and the second target The voltage waveform diagram of each branch node on the bus where the node is located; the fifth determination module is used for determining the first target node based on the voltage waveform diagram of the second target node and the voltage waveform diagram of each branch node on the bus where the second target node is located The voltage phase difference between the two target nodes and the respective branch nodes on the bus where the second target node is located; the sixth determining module is used to determine each branch node on the bus where the second target node and the second target node are located according to the voltage phase difference the time offset between the branch nodes; the second time synchronization judgment module is configured to be based on the clock of the second target node and the time offset between the second target node and each branch node on the bus where the second target node is located
- the third time synchronization unit 34 includes: a third acquisition module, configured to acquire the time on the branch line segment when there is a branch line in the target line segment. the current waveform diagram of each sub-node; the seventh determination module is used to determine the current phase difference between the first target sub-node and sub-nodes other than the first target sub-node based on the current waveform diagram of each sub-node, wherein the first target sub-node A target child node is a branch node of the branch line segment; the eighth determination module is used to determine the time offset between the first target child node and the child nodes other than the first target child node according to the current phase difference; the third time synchronization The judgment module is configured to perform time synchronization on child nodes other than the first target child node based on the clock of the first target child node and the time offset between the first target child node and child nodes other than the first target child node
- the judgment unit 31 judges whether there is a branch line in the target line segment in the low-voltage line of the power supply and distribution system; the first time synchronization unit 32 does not have a branch line in the target line segment In the case of a line, time synchronization is performed on each node on the target line segment based on the relationship between the current phases of each node; the second time synchronization unit 33 determines the branch line corresponding to the branch line when there is a branch line in the target line segment.
- At least one bus and based on the relationship between the voltage phases of each branch node on each bus, time synchronization is performed on each branch node; the third time synchronization unit 34 is based on the branch line segment corresponding to each branch node.
- the relationship between the current phases of each sub-node, the time synchronization of each sub-node solves the problem that the time synchronization accuracy of the power supply and distribution system in the related art is not high, and the synchronization signal is susceptible to interference, through the current phase of each node.
- the relationship between the power supply and distribution system and the relationship between the voltage phases of each node can synchronize the clock of the low-voltage lines of the power supply and distribution system, thereby achieving the effect of improving the time synchronization accuracy and anti-interference ability of the power supply and distribution system.
- the power grid clock synchronization device includes a processor and a memory.
- the above judgment unit 31, the first time synchronization unit 32, the second time synchronization unit 33 and the third time synchronization unit 34 are all stored in the memory as program units, and are stored in the memory by the processor.
- the above-mentioned program elements stored in the memory are executed to realize the corresponding functions.
- the processor includes a kernel, and the kernel calls the corresponding program unit from the memory.
- the kernel can be set to one or more, by adjusting the kernel parameters to solve the problem that the time synchronization accuracy of the power supply and distribution system is not high, and the synchronization signal is susceptible to interference.
- Memory may include non-persistent memory in computer readable media, random access memory (RAM) and/or non-volatile memory, such as read only memory (ROM) or flash memory (flash RAM), the memory including at least one memory chip.
- RAM random access memory
- ROM read only memory
- flash RAM flash memory
- An embodiment of the present invention provides a storage medium on which a program is stored, and when the program is executed by a processor, the method for synchronizing the power grid clock is implemented.
- An embodiment of the present invention provides a processor, where the processor is configured to run a program, wherein the method for power grid clock synchronization is executed when the program is running.
- An embodiment of the present invention provides a device.
- the device includes a processor, a memory, and a program stored in the memory and running on the processor.
- the processor executes the program, the following steps are implemented: in a low-voltage line of a power supply and distribution system , determine whether there is a branch line in the target line segment; if there is no branch line in the target line segment, perform time synchronization on each node on the target line segment based on the relationship between the current phases of each node; In the case where there are branch lines, at least one bus corresponding to the branch line is determined, and based on the relationship between the voltage phases of each branch node on each bus, the time synchronization of each branch node is performed; based on each branch node The relationship between the current phases of each sub-node on the corresponding branch line segment is time-synchronized for each sub-node.
- the method further includes: in the process of time synchronization, the time management terminal obtains the absolute time through one of the following modules: a communication timing module, a Beidou timing module or a GPS timing module.
- Time synchronization of each node on the target line segment based on the relationship between the current phases of each node includes: acquiring the current waveform diagram of each node on the target line segment; based on the current waveform diagram of each node, determining the first target node and The current phase difference between nodes other than the first target node; the time offset between the first target node and the nodes other than the first target node is determined according to the current phase difference; based on the clock of the first target node and the first target node The time offset between the node and the nodes other than the first target node is used to perform time synchronization on the nodes other than the first target node.
- the method Before performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node, the method further includes: determining a plurality of nodes on the target line segment; The node with the shortest distance from the input end is determined as the first target node.
- Time synchronization of each branch node of the target line segment based on the relationship between the voltage phases of each branch node includes: acquiring the voltage waveform diagram of the second target node in the target line segment, and the voltage waveform of each branch node of the second target node Fig.; based on the voltage waveform diagram of the second target node and the voltage waveform diagram of each branch node of the second target node, determine the voltage phase difference between the second target node and each branch node of the second target node; according to the voltage phase difference Determine the time offset between the second target node and each branch node of the second target node; based on the clock of the second target node and the time offset between the second target node and each branch node of the second target node, to Each branch node of the second target node performs time synchronization.
- determining at least one bus bar corresponding to the branch line, and performing time synchronization on each branch node based on the relationship between the voltage phases of each branch node on each bus line includes: obtaining The voltage waveform diagram of the second target node in the target line segment, and the voltage waveform diagram of each branch node on the bus where the second target node is located; based on the voltage waveform diagram of the second target node and the bus on which the second target node is located The voltage waveform diagram of each branch node, determine the voltage phase difference between the second target node and each branch node on the bus where the second target node is located; determine the voltage phase difference between the second target node and the second target node according to the voltage phase difference.
- the time synchronization of each sub-node includes: acquiring the current waveform diagram of each sub-node on the branch line segment; The current waveform diagram of the node, determine the current phase difference between the first target sub-node and the sub-nodes other than the first target sub-node, wherein the first target sub-node is the branch node of the branch line segment; determine the first target sub-node according to the current phase difference.
- the devices in this article can be servers, PCs, PADs, mobile phones, and so on.
- the present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program initialized with the following method steps: in a low-voltage line of an electric power supply and distribution system, determining whether a branch exists in a target line segment line; when there is no branch line in the target line segment, time synchronization is performed on each node on the target line segment based on the relationship between the current phases of each node; when there is a branch line in the target line segment, determine At least one bus bar corresponding to the branch line, and based on the relationship between the voltage phases of each branch node on each bus line, time synchronization is performed on each branch node; The relationship between the current phases of the nodes is time-synchronized for each child node.
- the method further includes: in the process of time synchronization, the time management terminal obtains the absolute time through one of the following modules: a communication timing module, a Beidou timing module or a GPS timing module.
- Time synchronization of each node on the target line segment based on the relationship between the current phases of each node includes: acquiring the current waveform diagram of each node on the target line segment; based on the current waveform diagram of each node, determining the first target node and The current phase difference between nodes other than the first target node; the time offset between the first target node and the nodes other than the first target node is determined according to the current phase difference; based on the clock of the first target node and the first target node The time offset between the node and the nodes other than the first target node is used to perform time synchronization on the nodes other than the first target node.
- the method Before performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node, the method further includes: determining a plurality of nodes on the target line segment; The node with the shortest distance from the input end is determined as the first target node.
- Time synchronization of each branch node of the target line segment based on the relationship between the voltage phases of each branch node includes: acquiring the voltage waveform diagram of the second target node in the target line segment, and the voltage waveform of each branch node of the second target node Fig.; based on the voltage waveform diagram of the second target node and the voltage waveform diagram of each branch node of the second target node, determine the voltage phase difference between the second target node and each branch node of the second target node; according to the voltage phase difference Determine the time offset between the second target node and each branch node of the second target node; based on the clock of the second target node and the time offset between the second target node and each branch node of the second target node, to Each branch node of the second target node performs time synchronization.
- determining at least one bus bar corresponding to the branch line, and performing time synchronization on each branch node based on the relationship between the voltage phases of each branch node on each bus line includes: obtaining The voltage waveform diagram of the second target node in the target line segment, and the voltage waveform diagram of each branch node on the bus where the second target node is located; based on the voltage waveform diagram of the second target node and the bus on which the second target node is located The voltage waveform diagram of each branch node, determine the voltage phase difference between the second target node and each branch node on the bus where the second target node is located; determine the voltage phase difference between the second target node and the second target node according to the voltage phase difference.
- the time synchronization of each child node includes: acquiring the current waveform diagram of each child node on the branch line segment; The current waveform diagram of the node, determine the current phase difference between the first target sub-node and the sub-nodes other than the first target sub-node, wherein the first target sub-node is the branch node of the branch line segment; determine the first target sub-node according to the current phase difference.
- Time offset between a target child node and child nodes other than the first target child node based on the clock of the first target child node and the time offset between the first target child node and child nodes other than the first target child node time synchronization is performed on the child nodes other than the first target child node.
- the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
- computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
- the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
- a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
- processors CPUs
- input/output interfaces network interfaces
- memory volatile and non-volatile memory
- Memory may include non-persistent memory in computer readable media, random access memory (RAM) and/or non-volatile memory in the form of, for example, read only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
- RAM random access memory
- ROM read only memory
- flash RAM flash memory
- Computer-readable media includes both persistent and non-permanent, removable and non-removable media, and storage of information may be implemented by any method or technology.
- Information may be computer readable instructions, data structures, modules of programs, or other data.
- Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Flash Memory or other memory technology, Compact Disc Read Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
- computer-readable media does not include transitory computer-readable media, such as modulated data signals and carrier waves.
- the embodiments of the present application may be provided as a method, a system or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
- computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
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Abstract
Disclosed in the present application are a power grid clock synchronization method and device. The method comprises: in a low-voltage line of a power supply and distribution system, determining whether a branch line exists in a target line segment; in the case that the branch line does not exist in the target line segment, performing time synchronization on nodes on the target line segment on the basis of the relationship between current phases of the nodes; in the case that the branch line exists in the target line segment, determining at least one bus corresponding to the branch line, and performing time synchronization on branch nodes on the basis of the relationship between voltage phases of the branch nodes on each bus; and performing time synchronization on sub-nodes on the basis of the relationship between current phases of the sub-nodes on a branch line segment corresponding to each branch node. According to the present application, the problems in the related art that the time synchronization precision of the power supply and distribution system is not high and a synchronization signal is susceptible to interference are solved.
Description
本申请涉及时间同步技术领域,具体而言,涉及一种电网时钟同步方法及装置。The present application relates to the technical field of time synchronization, and in particular, to a method and device for power grid clock synchronization.
时间精确同步是智能配电网关键技术之一,通过时间精确同步,可实现故障识别、阻抗估计、电能质量诊断等相关应用功能。Accurate time synchronization is one of the key technologies of intelligent distribution network. Through accurate time synchronization, related application functions such as fault identification, impedance estimation, and power quality diagnosis can be realized.
在时间同步方法上,目前有通过网络对时、全球导航***对时的方法。但是目前的方法存在一些缺点,具体地,通过网络对时的方法,对时精度可到10ms级,但是难以再进一步精确,难以满足更高精度的要求,通过全球导航***对时的方法,虽然可以将时间精确到100us内,但是容易受到建筑物遮挡等因素影响,部分配电室或地下室难以接受到对时信号,使用范围受限。In terms of time synchronization methods, there are currently methods of time synchronization through a network and a global navigation system. However, the current method has some shortcomings. Specifically, through the network time synchronization method, the time synchronization accuracy can reach the level of 10ms, but it is difficult to be further accurate, and it is difficult to meet the requirements of higher precision. The global navigation system time synchronization method, although The time can be accurate to within 100us, but it is easily affected by factors such as building occlusion, and it is difficult for some power distribution rooms or basements to receive the time synchronization signal, and the scope of use is limited.
针对相关技术中电力供配电***的时间同步精度不高,同步信号易受干扰的问题,目前尚未提出有效的解决方案。Aiming at the problems in the related art that the time synchronization accuracy of the power supply and distribution system is not high and the synchronization signal is easily interfered, no effective solution has been proposed yet.
发明内容SUMMARY OF THE INVENTION
本申请提供一种电网时钟同步方法及装置,以解决相关技术中电力供配电***的时间同步精度不高,同步信号易受干扰的问题。The present application provides a power grid clock synchronization method and device to solve the problems in the related art that the time synchronization accuracy of the power supply and distribution system is not high, and the synchronization signal is susceptible to interference.
根据本申请的一个方面,提供了一种电网时钟同步方法。该方法包括:在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;在目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步;在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步;分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步。According to one aspect of the present application, a method for synchronizing a power grid clock is provided. The method includes: in the low-voltage line of the power supply and distribution system, judging whether there is a branch line in the target line segment; if there is no branch line in the target line segment, based on the relationship between the current phases of each node, the target line Each node on the line segment is time synchronized; in the case of a branch line in the target line segment, at least one bus corresponding to the branch line is determined, and based on the relationship between the voltage phases of each branch node on each bus, Time synchronization is performed on each branch node; time synchronization is performed on each child node based on the relationship between the current phases of each child node on the branch line segment corresponding to each branch node.
进一步地,该方法还包括:在时间同步的过程中,时间管理终端通过以下之一模块获取绝对时间:通信授时模块、北斗授时模块或GPS授时模块。Further, the method further includes: in the process of time synchronization, the time management terminal obtains the absolute time through one of the following modules: a communication timing module, a Beidou timing module or a GPS timing module.
进一步地,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步包括:获取目标线路段上的各个节点的电流波形图;基于各个节点的电流波形图,确定第一目标节点和第一目标节点以外的节点之间的电流相位差;根据电流相 位差确定第一目标节点和第一目标节点以外的节点之间的时间偏移;基于第一目标节点的时钟以及第一目标节点和第一目标节点以外的节点之间的时间偏移,对第一目标节点以外的节点进行时间同步。Further, performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node includes: acquiring a current waveform diagram of each node on the target line segment; The current phase difference between the target node and the nodes other than the first target node; the time offset between the first target node and the nodes other than the first target node is determined according to the current phase difference; based on the clock of the first target node and the first target node Time offset between a target node and nodes other than the first target node, and time synchronization is performed on nodes other than the first target node.
进一步地,在基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步之前,该方法还包括:在目标线路段上确定多个节点;将多个节点中与目标线路段的电流输入端距离最短的节点确定为第一目标节点。Further, before performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node, the method further includes: determining a plurality of nodes on the target line segment; The node with the shortest distance from the current input terminal of the segment is determined as the first target node.
进一步地,基于各个分支节点的电压相位之间的关系对目标线路段的各个分支节点进行时间同步包括:获取目标线路段中第二目标节点的电压波形图,以及第二目标节点的各个分支节点的电压波形图;基于第二目标节点的电压波形图和第二目标节点的各个分支节点的电压波形图,确定第二目标节点和第二目标节点的各个分支节点之间的电压相位差;根据电压相位差确定第二目标节点和第二目标节点的各个分支节点之间的时间偏移;基于第二目标节点的时钟以及第二目标节点和第二目标节点的各个分支节点之间的时间偏移,对第二目标节点的各个分支节点进行时间同步。Further, performing time synchronization on each branch node of the target line segment based on the relationship between the voltage phases of each branch node includes: acquiring a voltage waveform diagram of the second target node in the target line segment, and each branch node of the second target node. Based on the voltage waveform diagram of the second target node and the voltage waveform diagram of each branch node of the second target node, determine the voltage phase difference between the second target node and each branch node of the second target node; according to The voltage phase difference determines the time offset between the second target node and each branch node of the second target node; based on the clock of the second target node and the time offset between the second target node and each branch node of the second target node time synchronization is performed on each branch node of the second target node.
进一步地,在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步包括:获取目标线路段中第二目标节点的电压波形图,以及第二目标节点的所在的母线上的各个分支节点的电压波形图;基于第二目标节点的电压波形图和第二目标节点所在的母线上的各个分支节点的电压波形图,确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的电压相位差;根据电压相位差确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的时间偏移;基于第二目标节点的时钟,以及第二目标节点和第二目标节点所在母线上的各个分支节点之间的时间偏移,对第二目标节点所在的母线上的各个分支节点进行时间同步。Further, when there is a branch line in the target line segment, at least one bus corresponding to the branch line is determined, and based on the relationship between the voltage phases of each branch node on each bus, time synchronization is performed on each branch node. Including: acquiring the voltage waveform diagram of the second target node in the target line segment, and the voltage waveform diagram of each branch node on the bus where the second target node is located; based on the voltage waveform diagram of the second target node and the location of the second target node The voltage waveform diagram of each branch node on the bus, determine the voltage phase difference between the second target node and each branch node on the bus where the second target node is located; determine the second target node and the second target according to the voltage phase difference. The time offset between each branch node on the bus on which the node is located; based on the clock of the second target node and the time offset between the second target node and each branch node on the bus on which the second target node is located, for the first Each branch node on the bus where the two target nodes are located performs time synchronization.
进一步地,分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步包括:获取分支线路段上的各个子节点的电流波形图;基于各个子节点的电流波形图,确定第一目标子节点和第一目标子节点以外的子节点之间的电流相位差,其中,第一目标子节点为分支线路段的分支节点;根据电流相位差确定第一目标子节点和第一目标子节点以外的子节点之间的时间偏移;基于第一目标子节点的时钟以及第一目标子节点和第一目标子节点以外的子节点之间的时间偏移,对第一目标子节点以外的子节点进行时间同步。Further, based on the relationship between the current phases of the respective child nodes on the branch line segment corresponding to each branch node, performing time synchronization on each child node includes: acquiring the current waveform diagram of each child node on the branch line segment; Based on the current waveforms of each sub-node, determine the current phase difference between the first target sub-node and sub-nodes other than the first target sub-node, wherein the first target sub-node is the branch node of the branch line segment; according to the current phase The difference determines the time offset between the first target child node and the child nodes other than the first target child node; based on the clock of the first target child node and between the first target child node and the child nodes other than the first target child node time offset, and time synchronization is performed on child nodes other than the first target child node.
根据本申请的另一方面,提供了一种电网时钟同步装置。该装置包括:判断单元,用于在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;第一时间同步单元,用于在目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步;第二时间同步单元,用于在 目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步;第三时间同步单元,用于分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步。According to another aspect of the present application, a power grid clock synchronization apparatus is provided. The device includes: a judging unit for judging whether a branch line exists in a target line segment in a low-voltage line of an electric power supply and distribution system; a first time synchronization unit for judging whether there is a branch line in the target line segment , perform time synchronization on each node on the target line segment based on the relationship between the current phases of each node; the second time synchronization unit is used for determining at least one branch line corresponding to the branch line in the case of a branch line in the target line segment bus, and based on the relationship between the voltage phases of each branch node on each bus, time synchronization is performed on each branch node; a third time synchronization unit is used to separately base on the branch line segment corresponding to each branch node. The relationship between the current phases of each sub-node is time-synchronized for each sub-node.
进一步地,该装置还包括:传输单元,用于在时间同步的过程中,采用时间管理终端通过以下之一通信模块将同步后的时间授予各个节点:北斗授时模块或GPS授时模块。Further, the device further includes: a transmission unit, configured to use the time management terminal to grant the synchronized time to each node through one of the following communication modules during the time synchronization process: a Beidou timing module or a GPS timing module.
为了实现上述目的,根据本申请的另一方面,提供了一种存储介质,存储介质包括存储的程序,其中,程序执行上述任意一种电网时钟同步方法。In order to achieve the above object, according to another aspect of the present application, a storage medium is provided, the storage medium includes a stored program, wherein the program executes any one of the above-mentioned power grid clock synchronization methods.
为了实现上述目的,根据本申请的另一方面,提供了一种处理器,处理器用于运行程序,其中,程序运行时执行上述任意一种电网时钟同步方法。In order to achieve the above object, according to another aspect of the present application, a processor is provided, and the processor is used for running a program, wherein any one of the above grid clock synchronization methods is executed when the program is running.
通过本申请,采用以下步骤:在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;在目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步;在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步;分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步,解决了相关技术中电力供配电***的时间同步精度不高,同步信号易受干扰的问题。通过各个节点的电流相位之间的关系以及各个节点的电压相位之间的关系,对电力供配电***的低压线路进行时钟同步,进而达到了提高电力供配电***的时间同步精度和抗干扰能力的效果。Through the present application, the following steps are adopted: in the low-voltage line of the power supply and distribution system, it is judged whether there is a branch line in the target line segment; if there is no branch line in the target line segment, based on the current phase difference of each node time synchronization of each node on the target line segment; in the case of a branch line in the target line segment, determine at least one bus bar corresponding to the branch line, and based on the voltage phase difference of each branch node on each bus line Time synchronization is performed on each branch node; based on the relationship between the current phases of each child node on the branch line segment corresponding to each branch node, time synchronization is performed on each child node, which solves the problem of electric power in the related art. The time synchronization accuracy of the power supply and distribution system is not high, and the synchronization signal is susceptible to interference. Through the relationship between the current phases of each node and the relationship between the voltage phases of each node, the clock synchronization of the low-voltage lines of the power supply and distribution system is performed, thereby improving the time synchronization accuracy and anti-interference of the power supply and distribution system. effect of ability.
构成本申请的一部分的附图用来提供对本申请的进一步理解,本申请的示意性实施例及其说明用于解释本申请,并不构成对本申请的不当限定。在附图中:The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:
图1是根据本申请实施例提供的电网时钟同步方法的流程图;1 is a flowchart of a method for synchronizing a power grid clock provided according to an embodiment of the present application;
图2是根据本申请实施例提供的对电力供配电***的低压线路进行时间同步的示意图;以及FIG. 2 is a schematic diagram of time synchronization of low-voltage lines of a power supply and distribution system provided according to an embodiment of the present application; and
图3是根据本申请实施例提供的电网时钟同步装置的示意图。FIG. 3 is a schematic diagram of a power grid clock synchronization apparatus provided according to an embodiment of the present application.
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
为了使本技术领域的人员更好地理解本申请方案,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分的实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本申请保护的范围。In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.
需要说明的是,本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本申请的实施例。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、***、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances for the embodiments of the application described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.
根据本申请的实施例,提供了一种电网时钟同步方法。According to an embodiment of the present application, a method for synchronizing a power grid clock is provided.
图1是根据本申请实施例的电网时钟同步方法的流程图。如图1所示,该方法包括以下步骤:FIG. 1 is a flowchart of a method for synchronizing clocks of a power grid according to an embodiment of the present application. As shown in Figure 1, the method includes the following steps:
步骤S101,在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路。Step S101, in the low-voltage line of the power supply and distribution system, determine whether there is a branch line in the target line segment.
需要说明的是,电力供配电***的低压线路复杂,部分线路段中不存在分支线路,部分线路段中存在分支线路,电力供配电***的低压线路的各个节点需要根据线路的情况采用不同的方式进行时间同步。It should be noted that the low-voltage lines of the power supply and distribution system are complex, there are no branch lines in some line sections, and there are branch lines in some line sections. way of time synchronization.
步骤S102,在目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步。Step S102, in the case that there is no branch line in the target line segment, perform time synchronization on each node on the target line segment based on the relationship between the current phases of each node.
需要说明的是,低压线路的分布电容很小,可以忽略不计,因而,在无分支的低压线路上的分布电容忽略不计的情况下,可以认为输入电流和输出电流相位相同,从而利用电流相位值的同时特性实现无分支低压导线上的节点的时间同步,可以将该方法记为无分支电流授时法。It should be noted that the distributed capacitance of the low-voltage line is very small and can be ignored. Therefore, when the distributed capacitance of the unbranched low-voltage line is negligible, it can be considered that the input current and the output current are in the same phase, so that the current phase value is used. The time synchronization of the nodes on the unbranched low-voltage wires can be realized by the simultaneous characteristic of the method, which can be recorded as the unbranched current timing method.
可选地,在本申请实施例提供的电网时钟同步方法中,在基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步之前,该方法还包括:在目标线路段上确定多个节点;将多个节点中与目标线路段的电流输入端距离最短的节点确 定为第一目标节点。Optionally, in the power grid clock synchronization method provided in the embodiment of the present application, before performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node, the method further includes: in the target line segment Multiple nodes are determined on the above; the node with the shortest distance from the current input end of the target line segment among the multiple nodes is determined as the first target node.
具体地,在无分支的目标线路的各个节点中,可以以与电流输入端距离最短的节点的时钟为基准,对其他节点进行时间同步,因而,将与电流输入端距离最短的节点确定为第一目标节点,也即基准节点。Specifically, in each node of the unbranched target line, the clock of the node with the shortest distance from the current input terminal can be used as a reference to perform time synchronization on other nodes. Therefore, the node with the shortest distance from the current input terminal is determined as the first node. A target node, that is, a reference node.
可选地,在本申请实施例提供的电网时钟同步方法中,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步包括:获取目标线路段上的各个节点的电流波形图;基于各个节点的电流波形图,确定第一目标节点和第一目标节点以外的节点之间的电流相位差;根据电流相位差确定第一目标节点和第一目标节点以外的节点之间的时间偏移;基于第一目标节点的时钟以及第一目标节点和第一目标节点以外的节点之间的时间偏移,对第一目标节点以外的节点进行时间同步。Optionally, in the power grid clock synchronization method provided in the embodiment of the present application, performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node includes: acquiring the current of each node on the target line segment. Waveform diagram; based on the current waveform diagram of each node, determine the current phase difference between the first target node and nodes other than the first target node; determine the current phase difference between the first target node and nodes other than the first target node according to the current phase difference time offset; based on the clock of the first target node and the time offset between the first target node and nodes other than the first target node, perform time synchronization on nodes other than the first target node.
具体地,通过时间管理终端获取目标线路段上的各个节点的电流波形图,从而可以确定第一目标节点的电流波形图中的零点位置,并获取零点位置的坐标,再获取待时间同步的节点的电流波形图中的零点位置的坐标,基于第一目标节点和待时间同步节点的电流波形图中的零点位置坐标,得到相位差,将相位差换算为时间差,也即时间偏移,计算第一目标节点的时钟和时间偏移的差或和,即为待时间同步的节点的精确时刻。Specifically, the current waveform diagram of each node on the target line segment is acquired through the time management terminal, so that the zero point position in the current waveform diagram of the first target node can be determined, the coordinates of the zero point position are acquired, and then the node to be time synchronized can be acquired The coordinates of the zero point position in the current waveform diagram of the current waveform of The difference or sum of the clock of a target node and the time offset is the exact moment of the node to be time synchronized.
步骤S103,在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步。Step S103, in the case that there is a branch line in the target line segment, determine at least one bus bar corresponding to the branch line, and perform time synchronization on each branch node based on the relationship between the voltage phases of each branch node on each bus line respectively .
需要说明的是,目标线路段可以包含多条母线,每条母线上包括多个分支节点,每个分支节点对应一条分支电路,在分支节点处,由于分支处导线/母排阻抗较小,电抗可以忽略不计,因此同一节点的各个分支节点处,在电抗忽略不计的情况下,可利以用电压相位的同时特性实现不同分支的时间同步,可以将该方法记为无阻抗电压授时法。It should be noted that the target line segment can include multiple bus bars, each bus includes multiple branch nodes, and each branch node corresponds to a branch circuit. It can be ignored, so at each branch node of the same node, when the reactance is negligible, the time synchronization of different branches can be realized by using the simultaneous characteristics of the voltage phase, and this method can be recorded as the non-impedance voltage timing method.
可选地,在本申请实施例提供的电网时钟同步方法中,在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步包括:获取目标线路段中第二目标节点的电压波形图,以及第二目标节点的所在的母线上的各个分支节点的电压波形图;基于第二目标节点的电压波形图和第二目标节点所在的母线上的各个分支节点的电压波形图,确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的电压相位差;根据电压相位差确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的时间偏移;基于第二目标节点的时钟,以及第二目标节点和 第二目标节点所在母线上的各个分支节点之间的时间偏移,对第二目标节点所在的母线上的各个分支节点进行时间同步。Optionally, in the power grid clock synchronization method provided in the embodiment of the present application, in the case of a branch line in the target line segment, at least one bus bar corresponding to the branch line is determined, and based on the The relationship between the voltage phases, the time synchronization of each branch node includes: acquiring the voltage waveform diagram of the second target node in the target line segment, and the voltage waveform diagram of each branch node on the bus where the second target node is located; The voltage waveform diagram of the second target node and the voltage waveform diagram of each branch node on the bus where the second target node is located, determine the voltage phase difference between the second target node and each branch node on the bus where the second target node is located Determine the time offset between each branch node on the bus where the second target node and the second target node are located according to the voltage phase difference; Based on the clock of the second target node, and the bus where the second target node and the second target node are located The time offset between each branch node on the bus is time offset, and time synchronization is performed on each branch node on the bus where the second target node is located.
具体地,可以确定第二目标节点的电压波形图中的零点位置,并获取零点位置的坐标,再获取第二目标节点的相同母线上的分支节点的电压波形图中的零点位置的坐标,基于第二目标节点和相同母线上的第二目标节点的分支节点的电压波形图中的零点位置坐标,得到相位差,将相位差换算为时间差,也即时间偏移,第二目标节点的时钟和时间偏移的差或和,即为第二目标节点的相同母线上的分支节点的精确时刻。Specifically, the position of the zero point in the voltage waveform diagram of the second target node can be determined, the coordinates of the zero point position can be obtained, and then the coordinates of the zero point position in the voltage waveform diagram of the branch nodes on the same bus of the second target node can be obtained, based on The second target node and the zero point position coordinates in the voltage waveform diagram of the branch node of the second target node on the same bus, obtain the phase difference, convert the phase difference into a time difference, that is, time offset, the clock of the second target node and The difference or sum of the time offsets is the exact moment of the branch node on the same bus line of the second target node.
步骤S104,分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步。Step S104 , based on the relationship between the current phases of the respective child nodes on the branch line segment corresponding to each branch node, perform time synchronization on each child node.
具体地,在目标线路段的每条母线上的各个分支节点进行时间同步后,还需要对分支节点下的分支线路段中的各个子节点进行时间同步。Specifically, after time synchronization is performed on each branch node on each bus of the target line segment, it is also necessary to perform time synchronization on each child node in the branch line segment under the branch node.
可选地,在本申请实施例提供的电网时钟同步方法中,分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步包括:获取分支线路段上的各个子节点的电流波形图;基于各个子节点的电流波形图,确定第一目标子节点和第一目标子节点以外的子节点之间的电流相位差,其中,第一目标子节点为分支线路段的分支节点;根据电流相位差确定第一目标子节点和第一目标子节点以外的子节点之间的时间偏移;基于第一目标子节点的时钟以及第一目标子节点和第一目标子节点以外的子节点之间的时间偏移,对第一目标子节点以外的子节点进行时间同步。Optionally, in the power grid clock synchronization method provided by the embodiment of the present application, based on the relationship between the current phases of the respective child nodes on the branch line segment corresponding to each branch node, the time synchronization of each child node includes: Obtain the current waveform diagram of each sub-node on the branch line segment; based on the current waveform diagram of each sub-node, determine the current phase difference between the first target sub-node and sub-nodes other than the first target sub-node, wherein the first target sub-node The target child node is a branch node of the branch line segment; the time offset between the first target child node and the child nodes other than the first target child node is determined according to the current phase difference; based on the clock of the first target child node and the first target The time offset between the child node and the child nodes other than the first target child node is used to perform time synchronization on the child nodes other than the first target child node.
具体地,对分支线路段上的各个子节点进行时间同步的原理与对无分支的目标线路段的时间同步的原理相同,通过时间管理终端获取分支线路的各个分支节点的电流波形图,将一个分支线路的分支节点确定为目标子节点,从而各个子节点的电流相位之间的关系实现各个子节点的时间同步。Specifically, the principle of time synchronization of each sub-node on the branch line segment is the same as that of the time synchronization of the target line segment without branch. The current waveform diagram of each branch node of the branch line is obtained through the time management terminal, and a The branch node of the branch line is determined as the target child node, so that the relationship between the current phases of each child node realizes the time synchronization of each child node.
可选地,在本申请实施例提供的电网时钟同步方法中,该方法还包括:在时间同步的过程中,时间管理终端通过以下之一模块获取绝对时间:通信授时模块、北斗授时模块或GPS授时模块。Optionally, in the power grid clock synchronization method provided in the embodiment of the present application, the method further includes: in the process of time synchronization, the time management terminal obtains the absolute time through one of the following modules: a communication timing module, a Beidou timing module or a GPS Timing module.
具体地,电力供配电***中的时间管理终端除了获取各个节点的电压相位图或电流相位图,还获取精准的对时间,为各个分支对时单元以及终端对时单元的准确对时奠定了数据基础。Specifically, the time management terminal in the power supply and distribution system not only obtains the voltage phase diagram or current phase diagram of each node, but also obtains accurate time synchronization, which lays the foundation for the accurate time synchronization of each branch time synchronization unit and the terminal time synchronization unit. Data base.
如图2所示,为根据本申请实施例提供的对电力供配电***的低压线路进行时间同步的示意图。As shown in FIG. 2 , it is a schematic diagram of time synchronization of low-voltage lines of a power supply and distribution system provided according to an embodiment of the present application.
对图2所示的电力供配电***的低压线路进行时间同步的过程如下:The process of time synchronization of the low-voltage lines of the power supply and distribution system shown in Figure 2 is as follows:
时间管理终端通通过无分支电流授时法计算得到精确时刻,并将精确时刻授予各个母线对应的分支对时单元,分支对时单元分别通过无阻抗电压授时法计算得到精确时刻,将精确时刻授予对应母线的各分支,再通过无分支电流授时法授时终端对时单元。The time management terminal calculates the precise time through the non-branch current timing method, and grants the precise time to the branch time synchronization unit corresponding to each bus, and the branch time synchronization unit calculates the precise time through the non-impedance voltage timing method, and grants the precise time to the corresponding Each branch of the busbar is then time-synchronized by the non-branch current timing method timing terminal.
需要说明的是,本申请的授时方法需要通过通讯或其他模式实现基础授时,基础授时精度需求为<±20ms。It should be noted that the timing method of the present application needs to realize basic timing through communication or other modes, and the basic timing accuracy requirement is <±20ms.
本申请实施例提供的电网时钟同步方法,通过在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;在目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步;在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步;分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步,解决了相关技术中电力供配电***的时间同步精度不高,同步信号易受干扰的问题。通过各个节点的电流相位之间的关系以及各个节点的电压相位之间的关系,对电力供配电***的低压线路进行时钟同步,进而达到了提高电力供配电***的时间同步精度和抗干扰能力的效果。The power grid clock synchronization method provided by the embodiment of the present application determines whether there is a branch line in the target line segment in the low-voltage line of the power supply and distribution system; if there is no branch line in the target line segment, based on the The relationship between the current phases performs time synchronization on each node on the target line segment; in the case of a branch line in the target line segment, at least one busbar corresponding to the branch line is determined, and based on each branch node on each busbar Based on the relationship between the voltage phases of each branch node, time synchronization is performed on each branch node; based on the relationship between the current phases of each child node on the branch line segment corresponding to each branch node, time synchronization is performed on each child node to solve the problem. In the related art, the time synchronization accuracy of the power supply and distribution system is not high, and the synchronization signal is susceptible to interference. Through the relationship between the current phases of each node and the relationship between the voltage phases of each node, the clock synchronization of the low-voltage lines of the power supply and distribution system is performed, thereby improving the time synchronization accuracy and anti-interference of the power supply and distribution system. effect of ability.
需要说明的是,在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机***中执行,并且,虽然在流程图中示出了逻辑顺序,但是在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤。It should be noted that the steps shown in the flowcharts of the accompanying drawings may be executed in a computer system, such as a set of computer-executable instructions, and, although a logical sequence is shown in the flowcharts, in some cases, Steps shown or described may be performed in an order different from that herein.
本申请实施例还提供了一种电网时钟同步装置,需要说明的是,本申请实施例的电网时钟同步装置可以用于执行本申请实施例所提供的用于电网时钟同步方法。以下对本申请实施例提供的电网时钟同步装置进行介绍。The embodiment of the present application further provides a power grid clock synchronization apparatus. It should be noted that the power grid clock synchronization apparatus of the present application embodiment may be used to execute the power grid clock synchronization method provided by the embodiment of the present application. The following describes the power grid clock synchronization device provided by the embodiment of the present application.
图3是根据本申请实施例的电网时钟同步装置的示意图。如图3所示,该装置包括:判断单元31、第一时间同步单元32和第二时间同步单元33。FIG. 3 is a schematic diagram of a power grid clock synchronization apparatus according to an embodiment of the present application. As shown in FIG. 3 , the apparatus includes: a judgment unit 31 , a first time synchronization unit 32 and a second time synchronization unit 33 .
具体地,判断单元31,用于在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;Specifically, the judging unit 31 is used for judging whether there is a branch line in the target line segment in the low-voltage line of the power supply and distribution system;
第一时间同步单元32,用于在目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步;The first time synchronization unit 32 is configured to perform time synchronization on each node on the target line segment based on the relationship between the current phases of each node when there is no branch line in the target line segment;
第二时间同步单元33,用于在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关 系,对各个分支节点进行时间同步;The second time synchronization unit 33 is configured to determine at least one bus bar corresponding to the branch line when there is a branch line in the target line segment, and based on the relationship between the voltage phases of the branch nodes on each bus Each branch node performs time synchronization;
第三时间同步单元34,用于分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步。The third time synchronization unit 34 is configured to perform time synchronization on each child node based on the relationship between the current phases of each child node on the branch line segment corresponding to each branch node, respectively.
可选地,在本申请实施例提供的电网时钟同步装置中,该装置还包括:传输单元,用于在时间同步的过程中,采用时间管理终端通过以下之一模块获取绝对时间:通信授时模块、北斗授时模块或GPS授时模块。Optionally, in the power grid clock synchronization device provided in the embodiment of the present application, the device further includes: a transmission unit, configured to use a time management terminal to obtain the absolute time through one of the following modules during the time synchronization process: a communication timing module , Beidou timing module or GPS timing module.
可选地,在本申请实施例提供的电网时钟同步装置中,第一时间同步单元31包括:第一获取模块,用于获取目标线路段上的各个节点的电流波形图;第一确定模块,用于基于各个节点的电流波形图,确定第一目标节点和第一目标节点以外的节点之间的电流相位差;第二确定模块,用于根据电流相位差确定第一目标节点和第一目标节点以外的节点之间的时间偏移;第一时间同步判断模块,用于基于第一目标节点的时钟以及第一目标节点和第一目标节点以外的节点之间的时间偏移,对第一目标节点以外的节点进行时间同步。Optionally, in the power grid clock synchronization device provided in the embodiment of the present application, the first time synchronization unit 31 includes: a first acquisition module, configured to acquire the current waveform diagram of each node on the target line segment; a first determination module, is used to determine the current phase difference between the first target node and nodes other than the first target node based on the current waveform diagram of each node; the second determination module is used to determine the first target node and the first target according to the current phase difference. The time offset between nodes other than the node; the first time synchronization judgment module is used for determining the first target node based on the clock of the first target node and the time offset between the first target node and nodes other than the first target node. Nodes other than the target node perform time synchronization.
可选地,在本申请实施例提供的电网时钟同步装置中,该装置还包括:第三确定模块,用于在基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步之前,在目标线路段上确定多个节点;第四确定模块,用于将多个节点中与目标线路段的电流输入端距离最短的节点确定为第一目标节点。Optionally, in the power grid clock synchronization device provided in the embodiment of the present application, the device further includes: a third determining module, configured to perform time chronometry for each node on the target line segment based on the relationship between the current phases of each node. Before synchronization, a plurality of nodes are determined on the target line segment; the fourth determination module is configured to determine the node with the shortest distance from the current input end of the target line segment among the plurality of nodes as the first target node.
可选地,在本申请实施例提供的电网时钟同步装置中,第二时间同步单元33包括:第二获取模块,用于获取目标线路段中第二目标节点的电压波形图,以及第二目标节点所在的母线上的各个分支节点的电压波形图;第五确定模块,用于基于第二目标节点的电压波形图和第二目标节点所在的母线上的各个分支节点的电压波形图,确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的电压相位差;第六确定模块,用于根据电压相位差确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的时间偏移;第二时间同步判断模块,用于基于第二目标节点的时钟,以及第二目标节点和第二目标节点所在的母线上的各个分支节点之间的时间偏移,对第二目标节点的各个分支节点进行时间同步。Optionally, in the power grid clock synchronization apparatus provided in this embodiment of the present application, the second time synchronization unit 33 includes: a second acquisition module, configured to acquire a voltage waveform diagram of the second target node in the target line segment, and the second target The voltage waveform diagram of each branch node on the bus where the node is located; the fifth determination module is used for determining the first target node based on the voltage waveform diagram of the second target node and the voltage waveform diagram of each branch node on the bus where the second target node is located The voltage phase difference between the two target nodes and the respective branch nodes on the bus where the second target node is located; the sixth determining module is used to determine each branch node on the bus where the second target node and the second target node are located according to the voltage phase difference the time offset between the branch nodes; the second time synchronization judgment module is configured to be based on the clock of the second target node and the time offset between the second target node and each branch node on the bus where the second target node is located , to perform time synchronization on each branch node of the second target node.
可选地,在本申请实施例提供的电网时钟同步装置中,第三时间同步单元34包括:第三获取模块,用于在目标线路段中存在分支线路的情况下,获取分支线路段上的各个子节点的电流波形图;第七确定模块,用于基于各个子节点的电流波形图,确定第一目标子节点和第一目标子节点以外的子节点之间的电流相位差,其中,第一目标子节点为分支线路段的分支节点;第八确定模块,用于根据电流相位差确定第一目标子节点和第一目标子节点以外的子节点之间的时间偏移;第三时间同步判断模块,用于 基于第一目标子节点的时钟以及第一目标子节点和第一目标子节点以外的子节点之间的时间偏移,对第一目标子节点以外的子节点进行时间同步。Optionally, in the power grid clock synchronization apparatus provided in the embodiment of the present application, the third time synchronization unit 34 includes: a third acquisition module, configured to acquire the time on the branch line segment when there is a branch line in the target line segment. the current waveform diagram of each sub-node; the seventh determination module is used to determine the current phase difference between the first target sub-node and sub-nodes other than the first target sub-node based on the current waveform diagram of each sub-node, wherein the first target sub-node A target child node is a branch node of the branch line segment; the eighth determination module is used to determine the time offset between the first target child node and the child nodes other than the first target child node according to the current phase difference; the third time synchronization The judgment module is configured to perform time synchronization on child nodes other than the first target child node based on the clock of the first target child node and the time offset between the first target child node and child nodes other than the first target child node.
本申请实施例提供的电网时钟同步装置,通过判断单元31在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;第一时间同步单元32在目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步;第二时间同步单元33在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步;第三时间同步单元34分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步,解决了相关技术中电力供配电***的时间同步精度不高,同步信号易受干扰的问题,通过各个节点的电流相位之间的关系以及各个节点的电压相位之间的关系,对电力供配电***的低压线路进行时钟同步,进而达到了提高电力供配电***的时间同步精度和抗干扰能力的效果。In the power grid clock synchronization device provided by the embodiment of the present application, the judgment unit 31 judges whether there is a branch line in the target line segment in the low-voltage line of the power supply and distribution system; the first time synchronization unit 32 does not have a branch line in the target line segment In the case of a line, time synchronization is performed on each node on the target line segment based on the relationship between the current phases of each node; the second time synchronization unit 33 determines the branch line corresponding to the branch line when there is a branch line in the target line segment. At least one bus, and based on the relationship between the voltage phases of each branch node on each bus, time synchronization is performed on each branch node; the third time synchronization unit 34 is based on the branch line segment corresponding to each branch node. The relationship between the current phases of each sub-node, the time synchronization of each sub-node, solves the problem that the time synchronization accuracy of the power supply and distribution system in the related art is not high, and the synchronization signal is susceptible to interference, through the current phase of each node. The relationship between the power supply and distribution system and the relationship between the voltage phases of each node can synchronize the clock of the low-voltage lines of the power supply and distribution system, thereby achieving the effect of improving the time synchronization accuracy and anti-interference ability of the power supply and distribution system.
所述电网时钟同步装置包括处理器和存储器,上述判断单元31、第一时间同步单元32、第二时间同步单元33和第三时间同步单元34等均作为程序单元存储在存储器中,由处理器执行存储在存储器中的上述程序单元来实现相应的功能。The power grid clock synchronization device includes a processor and a memory. The above judgment unit 31, the first time synchronization unit 32, the second time synchronization unit 33 and the third time synchronization unit 34 are all stored in the memory as program units, and are stored in the memory by the processor. The above-mentioned program elements stored in the memory are executed to realize the corresponding functions.
处理器中包含内核,由内核去存储器中调取相应的程序单元。内核可以设置一个或以上,通过调整内核参数来解决电力供配电***的时间同步精度不高,同步信号易受干扰的问题。The processor includes a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to one or more, by adjusting the kernel parameters to solve the problem that the time synchronization accuracy of the power supply and distribution system is not high, and the synchronization signal is susceptible to interference.
存储器可能包括计算机可读介质中的非永久性存储器,随机存取存储器(RAM)和/或非易失性内存等形式,如只读存储器(ROM)或闪存(flash RAM),存储器包括至少一个存储芯片。Memory may include non-persistent memory in computer readable media, random access memory (RAM) and/or non-volatile memory, such as read only memory (ROM) or flash memory (flash RAM), the memory including at least one memory chip.
本发明实施例提供了一种存储介质,其上存储有程序,该程序被处理器执行时实现所述电网时钟同步方法。An embodiment of the present invention provides a storage medium on which a program is stored, and when the program is executed by a processor, the method for synchronizing the power grid clock is implemented.
本发明实施例提供了一种处理器,所述处理器用于运行程序,其中,所述程序运行时执行所述电网时钟同步方法。An embodiment of the present invention provides a processor, where the processor is configured to run a program, wherein the method for power grid clock synchronization is executed when the program is running.
本发明实施例提供了一种设备,设备包括处理器、存储器及存储在存储器上并可在处理器上运行的程序,处理器执行程序时实现以下步骤:在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;在目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步;在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同 步;分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步。An embodiment of the present invention provides a device. The device includes a processor, a memory, and a program stored in the memory and running on the processor. When the processor executes the program, the following steps are implemented: in a low-voltage line of a power supply and distribution system , determine whether there is a branch line in the target line segment; if there is no branch line in the target line segment, perform time synchronization on each node on the target line segment based on the relationship between the current phases of each node; In the case where there are branch lines, at least one bus corresponding to the branch line is determined, and based on the relationship between the voltage phases of each branch node on each bus, the time synchronization of each branch node is performed; based on each branch node The relationship between the current phases of each sub-node on the corresponding branch line segment is time-synchronized for each sub-node.
该方法还包括:在时间同步的过程中,时间管理终端通过以下之一模块获取绝对时间:通信授时模块、北斗授时模块或GPS授时模块。The method further includes: in the process of time synchronization, the time management terminal obtains the absolute time through one of the following modules: a communication timing module, a Beidou timing module or a GPS timing module.
基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步包括:获取目标线路段上的各个节点的电流波形图;基于各个节点的电流波形图,确定第一目标节点和第一目标节点以外的节点之间的电流相位差;根据电流相位差确定第一目标节点和第一目标节点以外的节点之间的时间偏移;基于第一目标节点的时钟以及第一目标节点和第一目标节点以外的节点之间的时间偏移,对第一目标节点以外的节点进行时间同步。Time synchronization of each node on the target line segment based on the relationship between the current phases of each node includes: acquiring the current waveform diagram of each node on the target line segment; based on the current waveform diagram of each node, determining the first target node and The current phase difference between nodes other than the first target node; the time offset between the first target node and the nodes other than the first target node is determined according to the current phase difference; based on the clock of the first target node and the first target node The time offset between the node and the nodes other than the first target node is used to perform time synchronization on the nodes other than the first target node.
在基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步之前,该方法还包括:在目标线路段上确定多个节点;将多个节点中与目标线路段的电流输入端距离最短的节点确定为第一目标节点。Before performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node, the method further includes: determining a plurality of nodes on the target line segment; The node with the shortest distance from the input end is determined as the first target node.
基于各个分支节点的电压相位之间的关系对目标线路段的各个分支节点进行时间同步包括:获取目标线路段中第二目标节点的电压波形图,以及第二目标节点的各个分支节点的电压波形图;基于第二目标节点的电压波形图和第二目标节点的各个分支节点的电压波形图,确定第二目标节点和第二目标节点的各个分支节点之间的电压相位差;根据电压相位差确定第二目标节点和第二目标节点的各个分支节点之间的时间偏移;基于第二目标节点的时钟以及第二目标节点和第二目标节点的各个分支节点之间的时间偏移,对第二目标节点的各个分支节点进行时间同步。Time synchronization of each branch node of the target line segment based on the relationship between the voltage phases of each branch node includes: acquiring the voltage waveform diagram of the second target node in the target line segment, and the voltage waveform of each branch node of the second target node Fig.; based on the voltage waveform diagram of the second target node and the voltage waveform diagram of each branch node of the second target node, determine the voltage phase difference between the second target node and each branch node of the second target node; according to the voltage phase difference Determine the time offset between the second target node and each branch node of the second target node; based on the clock of the second target node and the time offset between the second target node and each branch node of the second target node, to Each branch node of the second target node performs time synchronization.
在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步包括:获取目标线路段中第二目标节点的电压波形图,以及第二目标节点的所在的母线上的各个分支节点的电压波形图;基于第二目标节点的电压波形图和第二目标节点所在的母线上的各个分支节点的电压波形图,确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的电压相位差;根据电压相位差确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的时间偏移;基于第二目标节点的时钟,以及第二目标节点和第二目标节点所在母线上的各个分支节点之间的时间偏移,对第二目标节点所在的母线上的各个分支节点进行时间同步。When there is a branch line in the target line segment, determining at least one bus bar corresponding to the branch line, and performing time synchronization on each branch node based on the relationship between the voltage phases of each branch node on each bus line includes: obtaining The voltage waveform diagram of the second target node in the target line segment, and the voltage waveform diagram of each branch node on the bus where the second target node is located; based on the voltage waveform diagram of the second target node and the bus on which the second target node is located The voltage waveform diagram of each branch node, determine the voltage phase difference between the second target node and each branch node on the bus where the second target node is located; determine the voltage phase difference between the second target node and the second target node according to the voltage phase difference. The time offset between each branch node on the bus; based on the clock of the second target node and the time offset between the second target node and each branch node on the bus where the second target node is located, the second target node Time synchronization is performed on each branch node on the bus where it is located.
分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步包括:获取分支线路段上的各个子节点的电流波形图;基于各个子节点的电流波形图,确定第一目标子节点和第一目标子节点以外的子节点 之间的电流相位差,其中,第一目标子节点为分支线路段的分支节点;根据电流相位差确定第一目标子节点和第一目标子节点以外的子节点之间的时间偏移;基于第一目标子节点的时钟以及第一目标子节点和第一目标子节点以外的子节点之间的时间偏移,对第一目标子节点以外的子节点进行时间同步。本文中的设备可以是服务器、PC、PAD、手机等。Based on the relationship between the current phases of each sub-node on the branch line segment corresponding to each branch node, the time synchronization of each sub-node includes: acquiring the current waveform diagram of each sub-node on the branch line segment; The current waveform diagram of the node, determine the current phase difference between the first target sub-node and the sub-nodes other than the first target sub-node, wherein the first target sub-node is the branch node of the branch line segment; determine the first target sub-node according to the current phase difference. Time offset between a target child node and child nodes other than the first target child node; based on the clock of the first target child node and the time offset between the first target child node and child nodes other than the first target child node time synchronization is performed on the child nodes other than the first target child node. The devices in this article can be servers, PCs, PADs, mobile phones, and so on.
本申请还提供了一种计算机程序产品,当在数据处理设备上执行时,适于执行初始化有如下方法步骤的程序:在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;在目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步;在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步;分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步。The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program initialized with the following method steps: in a low-voltage line of an electric power supply and distribution system, determining whether a branch exists in a target line segment line; when there is no branch line in the target line segment, time synchronization is performed on each node on the target line segment based on the relationship between the current phases of each node; when there is a branch line in the target line segment, determine At least one bus bar corresponding to the branch line, and based on the relationship between the voltage phases of each branch node on each bus line, time synchronization is performed on each branch node; The relationship between the current phases of the nodes is time-synchronized for each child node.
该方法还包括:在时间同步的过程中,时间管理终端通过以下之一模块获取绝对时间:通信授时模块、北斗授时模块或GPS授时模块。The method further includes: in the process of time synchronization, the time management terminal obtains the absolute time through one of the following modules: a communication timing module, a Beidou timing module or a GPS timing module.
基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步包括:获取目标线路段上的各个节点的电流波形图;基于各个节点的电流波形图,确定第一目标节点和第一目标节点以外的节点之间的电流相位差;根据电流相位差确定第一目标节点和第一目标节点以外的节点之间的时间偏移;基于第一目标节点的时钟以及第一目标节点和第一目标节点以外的节点之间的时间偏移,对第一目标节点以外的节点进行时间同步。Time synchronization of each node on the target line segment based on the relationship between the current phases of each node includes: acquiring the current waveform diagram of each node on the target line segment; based on the current waveform diagram of each node, determining the first target node and The current phase difference between nodes other than the first target node; the time offset between the first target node and the nodes other than the first target node is determined according to the current phase difference; based on the clock of the first target node and the first target node The time offset between the node and the nodes other than the first target node is used to perform time synchronization on the nodes other than the first target node.
在基于各个节点的电流相位之间的关系对目标线路段上的各个节点进行时间同步之前,该方法还包括:在目标线路段上确定多个节点;将多个节点中与目标线路段的电流输入端距离最短的节点确定为第一目标节点。Before performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node, the method further includes: determining a plurality of nodes on the target line segment; The node with the shortest distance from the input end is determined as the first target node.
基于各个分支节点的电压相位之间的关系对目标线路段的各个分支节点进行时间同步包括:获取目标线路段中第二目标节点的电压波形图,以及第二目标节点的各个分支节点的电压波形图;基于第二目标节点的电压波形图和第二目标节点的各个分支节点的电压波形图,确定第二目标节点和第二目标节点的各个分支节点之间的电压相位差;根据电压相位差确定第二目标节点和第二目标节点的各个分支节点之间的时间偏移;基于第二目标节点的时钟以及第二目标节点和第二目标节点的各个分支节点之间的时间偏移,对第二目标节点的各个分支节点进行时间同步。Time synchronization of each branch node of the target line segment based on the relationship between the voltage phases of each branch node includes: acquiring the voltage waveform diagram of the second target node in the target line segment, and the voltage waveform of each branch node of the second target node Fig.; based on the voltage waveform diagram of the second target node and the voltage waveform diagram of each branch node of the second target node, determine the voltage phase difference between the second target node and each branch node of the second target node; according to the voltage phase difference Determine the time offset between the second target node and each branch node of the second target node; based on the clock of the second target node and the time offset between the second target node and each branch node of the second target node, to Each branch node of the second target node performs time synchronization.
在目标线路段中存在分支线路的情况下,确定分支线路对应的至少一条母线,并 分别基于每条母线上的各个分支节点的电压相位之间的关系,对各个分支节点进行时间同步包括:获取目标线路段中第二目标节点的电压波形图,以及第二目标节点的所在的母线上的各个分支节点的电压波形图;基于第二目标节点的电压波形图和第二目标节点所在的母线上的各个分支节点的电压波形图,确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的电压相位差;根据电压相位差确定第二目标节点和第二目标节点所在的母线上的各个分支节点之间的时间偏移;基于第二目标节点的时钟,以及第二目标节点和第二目标节点所在母线上的各个分支节点之间的时间偏移,对第二目标节点所在的母线上的各个分支节点进行时间同步。When there is a branch line in the target line segment, determining at least one bus bar corresponding to the branch line, and performing time synchronization on each branch node based on the relationship between the voltage phases of each branch node on each bus line includes: obtaining The voltage waveform diagram of the second target node in the target line segment, and the voltage waveform diagram of each branch node on the bus where the second target node is located; based on the voltage waveform diagram of the second target node and the bus on which the second target node is located The voltage waveform diagram of each branch node, determine the voltage phase difference between the second target node and each branch node on the bus where the second target node is located; determine the voltage phase difference between the second target node and the second target node according to the voltage phase difference. The time offset between each branch node on the bus; based on the clock of the second target node and the time offset between the second target node and each branch node on the bus where the second target node is located, the second target node Time synchronization is performed on each branch node on the bus where it is located.
分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对各个子节点进行时间同步包括:获取分支线路段上的各个子节点的电流波形图;基于各个子节点的电流波形图,确定第一目标子节点和第一目标子节点以外的子节点之间的电流相位差,其中,第一目标子节点为分支线路段的分支节点;根据电流相位差确定第一目标子节点和第一目标子节点以外的子节点之间的时间偏移;基于第一目标子节点的时钟以及第一目标子节点和第一目标子节点以外的子节点之间的时间偏移,对第一目标子节点以外的子节点进行时间同步。Based on the relationship between the current phases of each child node on the branch line segment corresponding to each branch node, the time synchronization of each child node includes: acquiring the current waveform diagram of each child node on the branch line segment; The current waveform diagram of the node, determine the current phase difference between the first target sub-node and the sub-nodes other than the first target sub-node, wherein the first target sub-node is the branch node of the branch line segment; determine the first target sub-node according to the current phase difference. Time offset between a target child node and child nodes other than the first target child node; based on the clock of the first target child node and the time offset between the first target child node and child nodes other than the first target child node time synchronization is performed on the child nodes other than the first target child node.
本领域内的技术人员应明白,本申请的实施例可提供为方法、***、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
本申请是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算 机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.
在一个典型的配置中,计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
存储器可能包括计算机可读介质中的非永久性存储器,随机存取存储器(RAM)和/或非易失性内存等形式,如只读存储器(ROM)或闪存(flash RAM)。存储器是计算机可读介质的示例。Memory may include non-persistent memory in computer readable media, random access memory (RAM) and/or non-volatile memory in the form of, for example, read only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括,但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带,磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质,可用于存储可以被计算设备访问的信息。按照本文中的界定,计算机可读介质不包括暂存电脑可读媒体(transitory media),如调制的数据信号和载波。Computer-readable media includes both persistent and non-permanent, removable and non-removable media, and storage of information may be implemented by any method or technology. Information may be computer readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Flash Memory or other memory technology, Compact Disc Read Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media, such as modulated data signals and carrier waves.
还需要说明的是,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括要素的过程、方法、商品或者设备中还存在另外的相同要素。It should also be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Other elements not expressly listed, or which are inherent to such a process, method, article of manufacture, or apparatus are also included. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture or apparatus that includes the element.
本领域技术人员应明白,本申请的实施例可提供为方法、***或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。It will be appreciated by those skilled in the art that the embodiments of the present application may be provided as a method, a system or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
以上仅为本申请的实施例而已,并不用于限制本申请。对于本领域技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等,均应包含在本申请的权利要求范围之内。The above are only examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.
Claims (10)
- 一种电网时钟同步方法,其特征在于,包括:A method for power grid clock synchronization, comprising:在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;In the low-voltage line of the power supply and distribution system, determine whether there is a branch line in the target line segment;在所述目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对所述目标线路段上的各个节点进行时间同步;In the case that there is no branch line in the target line segment, time synchronization is performed on each node on the target line segment based on the relationship between the current phases of each node;在所述目标线路段中存在分支线路的情况下,确定所述分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对所述各个分支节点进行时间同步;In the case that there is a branch line in the target line segment, at least one bus bar corresponding to the branch line is determined, and based on the relationship between the voltage phases of each branch node on each bus line, the time synchronization;分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对所述各个子节点进行时间同步。Time synchronization is performed on the respective child nodes based on the relationship between the current phases of the respective child nodes on the branch line segment corresponding to each branch node, respectively.
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:The method according to claim 1, wherein the method further comprises:在时间同步的过程中,时间管理终端通过以下之一模块获取绝对时间:通信授时模块、北斗授时模块或GPS授时模块。In the process of time synchronization, the time management terminal obtains the absolute time through one of the following modules: a communication timing module, a Beidou timing module or a GPS timing module.
- 根据权利要求1所述的方法,其特征在于,基于各个节点的电流相位之间的关系对所述目标线路段上的各个节点进行时间同步包括:The method according to claim 1, wherein the time synchronization of each node on the target line segment based on the relationship between the current phases of each node comprises:获取所述目标线路段上的各个节点的电流波形图;obtaining the current waveform diagram of each node on the target line segment;基于各个节点的电流波形图,确定第一目标节点和所述第一目标节点以外的节点之间的电流相位差;determining the current phase difference between the first target node and nodes other than the first target node based on the current waveform diagram of each node;根据所述电流相位差确定所述第一目标节点和所述第一目标节点以外的节点之间的时间偏移;determining a time offset between the first target node and nodes other than the first target node according to the current phase difference;基于所述第一目标节点的时钟以及所述第一目标节点和所述第一目标节点以外的节点之间的时间偏移,对所述第一目标节点以外的节点进行时间同步。Time synchronization is performed on nodes other than the first target node based on the clock of the first target node and the time offset between the first target node and nodes other than the first target node.
- 根据权利要求3所述的方法,其特征在于,在基于各个节点的电流相位之间的关系对所述目标线路段上的各个节点进行时间同步之前,所述方法还包括:The method according to claim 3, wherein before performing time synchronization on each node on the target line segment based on the relationship between the current phases of each node, the method further comprises:在所述目标线路段上确定多个节点;determining a plurality of nodes on the target line segment;将所述多个节点中与所述目标线路段的电流输入端距离最短的节点确定为所述第一目标节点。A node with the shortest distance from the current input end of the target line segment among the plurality of nodes is determined as the first target node.
- 根据权利要求1所述的方法,其特征在于,在所述目标线路段中存在分支线路的情况下,确定所述分支线路对应的至少一条母线,并分别基于每条母线上的各个分 支节点的电压相位之间的关系,对所述各个分支节点进行时间同步包括:The method according to claim 1, wherein, in the case that there is a branch line in the target line segment, at least one bus bar corresponding to the branch line is determined, and the The relationship between the voltage phases, the time synchronization of each branch node includes:获取所述目标线路段中第二目标节点的电压波形图,以及所述第二目标节点的所在的母线上的各个分支节点的电压波形图;acquiring the voltage waveform diagram of the second target node in the target line segment, and the voltage waveform diagram of each branch node on the bus where the second target node is located;基于所述第二目标节点的电压波形图和所述第二目标节点所在的母线上的各个分支节点的电压波形图,确定所述第二目标节点和所述第二目标节点所在的母线上的各个分支节点之间的电压相位差;Based on the voltage waveform diagram of the second target node and the voltage waveform diagrams of each branch node on the bus on which the second target node is located, determine the voltage on the bus on which the second target node and the second target node are located. The voltage phase difference between each branch node;根据所述电压相位差确定所述第二目标节点和所述第二目标节点所在的母线上的各个分支节点之间的时间偏移;determining the time offset between the second target node and each branch node on the bus where the second target node is located according to the voltage phase difference;基于所述第二目标节点的时钟,以及所述第二目标节点和所述第二目标节点所在母线上的各个分支节点之间的时间偏移,对所述第二目标节点所在的母线上的各个分支节点进行时间同步。Based on the clock of the second target node and the time offset between the second target node and each branch node on the bus on which the second target node is located, the Each branch node performs time synchronization.
- 根据权利要求1所述的方法,其特征在于,分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对所述各个子节点进行时间同步包括:The method according to claim 1, wherein, based on the relationship between the current phases of the respective child nodes on the branch line segment corresponding to each branch node, the time synchronization of the respective child nodes comprises:获取所述分支线路段上的各个子节点的电流波形图;obtaining a current waveform diagram of each sub-node on the branch line segment;基于各个子节点的电流波形图,确定第一目标子节点和所述第一目标子节点以外的子节点之间的电流相位差,其中,所述第一目标子节点为所述分支线路段的分支节点;Determine the current phase difference between the first target sub-node and sub-nodes other than the first target sub-node based on the current waveforms of each sub-node, wherein the first target sub-node is the branch line segment branch node;根据所述电流相位差确定所述第一目标子节点和所述第一目标子节点以外的子节点之间的时间偏移;determining the time offset between the first target sub-node and sub-nodes other than the first target sub-node according to the current phase difference;基于所述第一目标子节点的时钟以及所述第一目标子节点和所述第一目标子节点以外的子节点之间的时间偏移,对所述第一目标子节点以外的子节点进行时间同步。Based on the clock of the first target child node and the time offset between the first target child node and the child nodes other than the first target child node, perform a time synchronization.
- 一种电网时钟同步装置,其特征在于,包括:A power grid clock synchronization device, comprising:判断单元,用于在电力供配电***的低压线路中,判断目标线路段中是否存在分支线路;The judgment unit is used for judging whether there is a branch line in the target line segment in the low-voltage line of the power supply and distribution system;第一时间同步单元,用于在所述目标线路段中不存在分支线路的情况下,基于各个节点的电流相位之间的关系对所述目标线路段上的各个节点进行时间同步;a first time synchronization unit, configured to perform time synchronization on each node on the target line segment based on the relationship between the current phases of each node when there is no branch line in the target line segment;第二时间同步单元,用于在所述目标线路段中存在分支线路的情况下,确定 所述分支线路对应的至少一条母线,并分别基于每条母线上的各个分支节点的电压相位之间的关系,对所述母线上的各个分支节点进行时间同步;The second time synchronization unit is configured to determine at least one bus bar corresponding to the branch line when there is a branch line in the target line segment, and based on the difference between the voltage phases of the respective branch nodes on each bus line respectively relationship, and time synchronization is performed on each branch node on the bus;第三时间同步单元,用于分别基于每个分支节点对应的分支线路段上的各个子节点的电流相位之间的关系,对所述各个子节点进行时间同步。The third time synchronization unit is configured to perform time synchronization on the respective child nodes based on the relationship between the current phases of the respective child nodes on the branch line segment corresponding to each branch node, respectively.
- 根据权利要求7所述的装置,其特征在于,所述装置还包括:The device according to claim 7, wherein the device further comprises:传输单元,用于在时间同步的过程中,采用时间管理终端通过以下之一模块获取绝对时间:通信授时模块、北斗授时模块或GPS授时模块。The transmission unit is used for obtaining the absolute time through one of the following modules using the time management terminal during the time synchronization process: a communication timing module, a Beidou timing module or a GPS timing module.
- 一种存储介质,其特征在于,所述存储介质包括存储的程序,其中,所述程序执行权利要求1至6中任意一项所述的电网时钟同步方法。A storage medium, characterized in that the storage medium includes a stored program, wherein the program executes the power grid clock synchronization method according to any one of claims 1 to 6.
- 一种处理器,其特征在于,所述处理器用于运行程序,其中,所述程序运行时执行权利要求1至6中任意一项所述的电网时钟同步方法。A processor, characterized in that the processor is used for running a program, wherein the method for synchronizing a power grid clock according to any one of claims 1 to 6 is executed when the program is running.
Applications Claiming Priority (2)
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US20150043254A1 (en) * | 2012-02-14 | 2015-02-12 | Lti Reenergy Gmbh | Grid feed apparatus, energy feed system and method for operating a grid feed apparatus |
CN106645919A (en) * | 2016-12-26 | 2017-05-10 | 北京四方继保自动化股份有限公司 | Power grid full spectrum power oscillation phasor synchronization measurement method based on three-phase instantaneous power |
CN111273085A (en) * | 2020-02-21 | 2020-06-12 | 江苏方天电力技术有限公司 | Power distribution network clock synchronization correction method based on intrinsic electrical phase difference |
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WO2020067941A1 (en) * | 2018-09-27 | 2020-04-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods, second node and apparatus for determining clock asynchronization |
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US20150043254A1 (en) * | 2012-02-14 | 2015-02-12 | Lti Reenergy Gmbh | Grid feed apparatus, energy feed system and method for operating a grid feed apparatus |
CN106645919A (en) * | 2016-12-26 | 2017-05-10 | 北京四方继保自动化股份有限公司 | Power grid full spectrum power oscillation phasor synchronization measurement method based on three-phase instantaneous power |
CN111273085A (en) * | 2020-02-21 | 2020-06-12 | 江苏方天电力技术有限公司 | Power distribution network clock synchronization correction method based on intrinsic electrical phase difference |
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